| "Avalanche" | |
|---|---|
| Captain Scarlet and the Mysterons episode | |
| Episode no. | Episode 11 |
| Directed by | Brian Burgess |
| Written by | Shane Rimmer |
| Cinematography by | Paddy Seale |
| Editing by | Harry MacDonald |
| Production code | SCA 10[1] |
| Original air date | 27 October 1967 |
| Guest character voices | |
| |
"Avalanche" is the 11th episode of Captain Scarlet and the Mysterons, a British Supermarionation television series created by Gerry and Sylvia Anderson and produced by their company Century 21 Productions. It marked the scriptwriting debut of Century 21 voice actor Shane Rimmer, and was first broadcast on 27 October 1967 on ATV Midlands.
Set in 2068, the series depicts a "war of nerves" between Earth and the Mysterons: a race of Martians with the power to create functioning copies of destroyed people or objects and use them to carry out acts of aggression against humanity. Earth is defended by a military organisation called Spectrum, whose top agent, Captain Scarlet, was killed by the Mysterons and replaced by a reconstruction that subsequently broke free of their control. Scarlet's double has a self-healing power that enables him to recover from injuries that would be fatal to anyone else, making him Spectrum's best asset in its fight against the Mysterons.
In "Avalanche", the Mysterons destroy and reconstruct a maintenance technician and his snowcat to attack the Frost Line Outer Space Defence System in Canada.